/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/bitvector/interleave_bits.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-15 17:28:14,481 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-15 17:28:14,546 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-15 17:28:14,554 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-15 17:28:14,554 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-15 17:28:14,583 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-15 17:28:14,583 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-15 17:28:14,584 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-15 17:28:14,584 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-15 17:28:14,588 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-15 17:28:14,588 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-15 17:28:14,589 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-15 17:28:14,589 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-15 17:28:14,590 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-15 17:28:14,590 INFO L153 SettingsManager]: * Use SBE=true [2023-12-15 17:28:14,590 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-15 17:28:14,591 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-15 17:28:14,591 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-15 17:28:14,591 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-15 17:28:14,591 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-15 17:28:14,591 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-15 17:28:14,591 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-15 17:28:14,592 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-15 17:28:14,592 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-15 17:28:14,592 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-15 17:28:14,592 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-15 17:28:14,592 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-15 17:28:14,592 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-15 17:28:14,593 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-15 17:28:14,593 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-15 17:28:14,594 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-15 17:28:14,594 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-15 17:28:14,594 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 17:28:14,594 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-15 17:28:14,594 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-15 17:28:14,594 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-15 17:28:14,594 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-15 17:28:14,594 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-15 17:28:14,594 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-15 17:28:14,595 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-15 17:28:14,595 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-15 17:28:14,595 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-15 17:28:14,595 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-15 17:28:14,595 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-15 17:28:14,768 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-15 17:28:14,780 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-15 17:28:14,782 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-15 17:28:14,783 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-15 17:28:14,783 INFO L274 PluginConnector]: CDTParser initialized [2023-12-15 17:28:14,783 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/bitvector/interleave_bits.i [2023-12-15 17:28:15,796 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-15 17:28:15,932 INFO L384 CDTParser]: Found 1 translation units. [2023-12-15 17:28:15,932 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/bitvector/interleave_bits.i [2023-12-15 17:28:15,937 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/680e3ed40/ca6b0b5b6fc7455ab3392a17c3a7f95b/FLAGd45b14c87 [2023-12-15 17:28:15,946 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/680e3ed40/ca6b0b5b6fc7455ab3392a17c3a7f95b [2023-12-15 17:28:15,948 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-15 17:28:15,949 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-15 17:28:15,949 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-15 17:28:15,949 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-15 17:28:15,952 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-15 17:28:15,953 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 05:28:15" (1/1) ... [2023-12-15 17:28:15,953 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f7342f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:28:15, skipping insertion in model container [2023-12-15 17:28:15,954 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 05:28:15" (1/1) ... [2023-12-15 17:28:15,969 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-15 17:28:16,051 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/bitvector/interleave_bits.i[1175,1188] [2023-12-15 17:28:16,065 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 17:28:16,071 INFO L202 MainTranslator]: Completed pre-run [2023-12-15 17:28:16,079 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/bitvector/interleave_bits.i[1175,1188] [2023-12-15 17:28:16,086 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 17:28:16,099 INFO L206 MainTranslator]: Completed translation [2023-12-15 17:28:16,099 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:28:16 WrapperNode [2023-12-15 17:28:16,099 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-15 17:28:16,101 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-15 17:28:16,104 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-15 17:28:16,104 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-15 17:28:16,109 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:28:16" (1/1) ... [2023-12-15 17:28:16,128 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:28:16" (1/1) ... [2023-12-15 17:28:16,172 INFO L138 Inliner]: procedures = 15, calls = 7, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 217 [2023-12-15 17:28:16,172 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-15 17:28:16,173 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-15 17:28:16,173 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-15 17:28:16,173 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-15 17:28:16,186 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:28:16" (1/1) ... [2023-12-15 17:28:16,187 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:28:16" (1/1) ... [2023-12-15 17:28:16,199 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:28:16" (1/1) ... [2023-12-15 17:28:16,225 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-15 17:28:16,225 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:28:16" (1/1) ... [2023-12-15 17:28:16,225 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:28:16" (1/1) ... [2023-12-15 17:28:16,228 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:28:16" (1/1) ... [2023-12-15 17:28:16,231 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:28:16" (1/1) ... [2023-12-15 17:28:16,232 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:28:16" (1/1) ... [2023-12-15 17:28:16,233 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:28:16" (1/1) ... [2023-12-15 17:28:16,234 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-15 17:28:16,235 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-15 17:28:16,235 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-15 17:28:16,235 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-15 17:28:16,236 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:28:16" (1/1) ... [2023-12-15 17:28:16,239 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 17:28:16,248 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 17:28:16,256 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-15 17:28:16,309 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-15 17:28:16,309 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-15 17:28:16,309 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-15 17:28:16,309 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-15 17:28:16,290 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-15 17:28:16,352 INFO L241 CfgBuilder]: Building ICFG [2023-12-15 17:28:16,353 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-15 17:28:19,504 INFO L282 CfgBuilder]: Performing block encoding [2023-12-15 17:28:19,527 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-15 17:28:19,527 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-15 17:28:19,527 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 05:28:19 BoogieIcfgContainer [2023-12-15 17:28:19,527 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-15 17:28:19,529 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-15 17:28:19,529 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-15 17:28:19,531 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-15 17:28:19,531 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 05:28:15" (1/3) ... [2023-12-15 17:28:19,532 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16734fe0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 05:28:19, skipping insertion in model container [2023-12-15 17:28:19,532 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:28:16" (2/3) ... [2023-12-15 17:28:19,532 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16734fe0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 05:28:19, skipping insertion in model container [2023-12-15 17:28:19,532 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 05:28:19" (3/3) ... [2023-12-15 17:28:19,535 INFO L112 eAbstractionObserver]: Analyzing ICFG interleave_bits.i [2023-12-15 17:28:19,547 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-15 17:28:19,547 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-15 17:28:19,585 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-15 17:28:19,589 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@2342197b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-15 17:28:19,589 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-15 17:28:19,592 INFO L276 IsEmpty]: Start isEmpty. Operand has 64 states, 62 states have (on average 1.8064516129032258) internal successors, (112), 63 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:28:19,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-12-15 17:28:19,597 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:28:19,597 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:28:19,598 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:28:19,601 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:28:19,601 INFO L85 PathProgramCache]: Analyzing trace with hash -1383709583, now seen corresponding path program 1 times [2023-12-15 17:28:19,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:28:19,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265806572] [2023-12-15 17:28:19,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:28:19,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:28:19,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:28:19,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:28:19,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:28:19,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1265806572] [2023-12-15 17:28:19,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1265806572] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:28:19,794 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:28:19,795 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 17:28:19,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143263394] [2023-12-15 17:28:19,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:28:19,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-15 17:28:19,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:28:19,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-15 17:28:19,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-15 17:28:19,832 INFO L87 Difference]: Start difference. First operand has 64 states, 62 states have (on average 1.8064516129032258) internal successors, (112), 63 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 15.5) internal successors, (31), 2 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:28:19,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:28:19,861 INFO L93 Difference]: Finished difference Result 113 states and 195 transitions. [2023-12-15 17:28:19,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-15 17:28:19,863 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 15.5) internal successors, (31), 2 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2023-12-15 17:28:19,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:28:19,870 INFO L225 Difference]: With dead ends: 113 [2023-12-15 17:28:19,870 INFO L226 Difference]: Without dead ends: 62 [2023-12-15 17:28:19,872 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-15 17:28:19,876 INFO L413 NwaCegarLoop]: 108 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 17:28:19,877 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 108 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 17:28:19,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2023-12-15 17:28:19,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2023-12-15 17:28:19,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 61 states have (on average 1.7704918032786885) internal successors, (108), 61 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:28:19,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 108 transitions. [2023-12-15 17:28:19,911 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 108 transitions. Word has length 31 [2023-12-15 17:28:19,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:28:19,912 INFO L495 AbstractCegarLoop]: Abstraction has 62 states and 108 transitions. [2023-12-15 17:28:19,912 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 15.5) internal successors, (31), 2 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:28:19,913 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 108 transitions. [2023-12-15 17:28:19,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-12-15 17:28:19,914 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:28:19,914 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:28:19,914 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-15 17:28:19,915 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:28:19,916 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:28:19,916 INFO L85 PathProgramCache]: Analyzing trace with hash 2085180442, now seen corresponding path program 1 times [2023-12-15 17:28:19,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:28:19,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894325078] [2023-12-15 17:28:19,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:28:19,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:28:19,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:28:20,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:28:20,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:28:20,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894325078] [2023-12-15 17:28:20,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [894325078] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:28:20,106 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:28:20,106 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 17:28:20,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000547885] [2023-12-15 17:28:20,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:28:20,107 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 17:28:20,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:28:20,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 17:28:20,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 17:28:20,108 INFO L87 Difference]: Start difference. First operand 62 states and 108 transitions. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 2 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:28:20,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:28:20,143 INFO L93 Difference]: Finished difference Result 137 states and 242 transitions. [2023-12-15 17:28:20,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 17:28:20,143 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 2 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2023-12-15 17:28:20,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:28:20,144 INFO L225 Difference]: With dead ends: 137 [2023-12-15 17:28:20,144 INFO L226 Difference]: Without dead ends: 76 [2023-12-15 17:28:20,144 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 17:28:20,145 INFO L413 NwaCegarLoop]: 100 mSDtfsCounter, 22 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 196 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 17:28:20,145 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 196 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 17:28:20,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2023-12-15 17:28:20,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 68. [2023-12-15 17:28:20,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 67 states have (on average 1.7313432835820894) internal successors, (116), 67 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:28:20,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 116 transitions. [2023-12-15 17:28:20,151 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 116 transitions. Word has length 31 [2023-12-15 17:28:20,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:28:20,151 INFO L495 AbstractCegarLoop]: Abstraction has 68 states and 116 transitions. [2023-12-15 17:28:20,151 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 2 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:28:20,151 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 116 transitions. [2023-12-15 17:28:20,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-12-15 17:28:20,152 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:28:20,152 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:28:20,152 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-15 17:28:20,153 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:28:20,153 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:28:20,153 INFO L85 PathProgramCache]: Analyzing trace with hash 1548527453, now seen corresponding path program 1 times [2023-12-15 17:28:20,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:28:20,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082360297] [2023-12-15 17:28:20,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:28:20,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:28:20,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:28:20,313 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:28:20,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:28:20,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082360297] [2023-12-15 17:28:20,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2082360297] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 17:28:20,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [376735791] [2023-12-15 17:28:20,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:28:20,314 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 17:28:20,315 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 17:28:20,333 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 17:28:20,339 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-15 17:28:20,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:28:20,410 INFO L262 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-15 17:28:20,415 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 17:28:20,456 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:28:20,456 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 17:28:20,500 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:28:20,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [376735791] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 17:28:20,501 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-15 17:28:20,501 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-12-15 17:28:20,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337502676] [2023-12-15 17:28:20,501 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-15 17:28:20,502 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 17:28:20,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:28:20,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 17:28:20,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2023-12-15 17:28:20,503 INFO L87 Difference]: Start difference. First operand 68 states and 116 transitions. Second operand has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 6 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:28:20,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:28:20,614 INFO L93 Difference]: Finished difference Result 166 states and 294 transitions. [2023-12-15 17:28:20,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-15 17:28:20,617 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 6 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2023-12-15 17:28:20,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:28:20,618 INFO L225 Difference]: With dead ends: 166 [2023-12-15 17:28:20,618 INFO L226 Difference]: Without dead ends: 105 [2023-12-15 17:28:20,619 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=30, Unknown=0, NotChecked=0, Total=56 [2023-12-15 17:28:20,619 INFO L413 NwaCegarLoop]: 113 mSDtfsCounter, 141 mSDsluCounter, 304 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 141 SdHoareTripleChecker+Valid, 417 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 17:28:20,620 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [141 Valid, 417 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 17:28:20,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2023-12-15 17:28:20,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 105. [2023-12-15 17:28:20,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 104 states have (on average 1.75) internal successors, (182), 104 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:28:20,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 182 transitions. [2023-12-15 17:28:20,627 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 182 transitions. Word has length 41 [2023-12-15 17:28:20,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:28:20,627 INFO L495 AbstractCegarLoop]: Abstraction has 105 states and 182 transitions. [2023-12-15 17:28:20,627 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 6 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:28:20,627 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 182 transitions. [2023-12-15 17:28:20,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-12-15 17:28:20,629 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:28:20,629 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:28:20,634 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-15 17:28:20,833 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 17:28:20,834 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:28:20,834 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:28:20,834 INFO L85 PathProgramCache]: Analyzing trace with hash 1006070446, now seen corresponding path program 1 times [2023-12-15 17:28:20,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:28:20,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [776011442] [2023-12-15 17:28:20,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:28:20,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:28:20,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:28:20,939 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-12-15 17:28:20,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:28:20,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [776011442] [2023-12-15 17:28:20,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [776011442] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:28:20,941 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:28:20,941 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 17:28:20,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461733706] [2023-12-15 17:28:20,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:28:20,943 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 17:28:20,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:28:20,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 17:28:20,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 17:28:20,944 INFO L87 Difference]: Start difference. First operand 105 states and 182 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:28:20,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:28:20,978 INFO L93 Difference]: Finished difference Result 191 states and 336 transitions. [2023-12-15 17:28:20,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 17:28:20,978 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2023-12-15 17:28:20,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:28:20,980 INFO L225 Difference]: With dead ends: 191 [2023-12-15 17:28:20,981 INFO L226 Difference]: Without dead ends: 117 [2023-12-15 17:28:20,981 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 17:28:20,985 INFO L413 NwaCegarLoop]: 121 mSDtfsCounter, 99 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 17:28:20,985 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [99 Valid, 137 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 17:28:20,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2023-12-15 17:28:20,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 109. [2023-12-15 17:28:20,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 108 states have (on average 1.7407407407407407) internal successors, (188), 108 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:28:20,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 188 transitions. [2023-12-15 17:28:20,991 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 188 transitions. Word has length 71 [2023-12-15 17:28:20,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:28:20,995 INFO L495 AbstractCegarLoop]: Abstraction has 109 states and 188 transitions. [2023-12-15 17:28:20,995 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:28:20,995 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 188 transitions. [2023-12-15 17:28:20,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-12-15 17:28:21,000 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:28:21,000 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:28:21,000 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-15 17:28:21,000 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:28:21,001 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:28:21,001 INFO L85 PathProgramCache]: Analyzing trace with hash -1360624148, now seen corresponding path program 2 times [2023-12-15 17:28:21,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:28:21,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639964517] [2023-12-15 17:28:21,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:28:21,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:28:21,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:28:21,199 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-12-15 17:28:21,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:28:21,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1639964517] [2023-12-15 17:28:21,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1639964517] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:28:21,199 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:28:21,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 17:28:21,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631703105] [2023-12-15 17:28:21,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:28:21,200 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 17:28:21,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:28:21,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 17:28:21,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 17:28:21,202 INFO L87 Difference]: Start difference. First operand 109 states and 188 transitions. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:28:21,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:28:21,215 INFO L93 Difference]: Finished difference Result 240 states and 419 transitions. [2023-12-15 17:28:21,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 17:28:21,216 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2023-12-15 17:28:21,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:28:21,217 INFO L225 Difference]: With dead ends: 240 [2023-12-15 17:28:21,217 INFO L226 Difference]: Without dead ends: 151 [2023-12-15 17:28:21,219 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 17:28:21,220 INFO L413 NwaCegarLoop]: 106 mSDtfsCounter, 17 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 207 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 17:28:21,220 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 207 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 17:28:21,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2023-12-15 17:28:21,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 113. [2023-12-15 17:28:21,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 112 states have (on average 1.7142857142857142) internal successors, (192), 112 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:28:21,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 192 transitions. [2023-12-15 17:28:21,237 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 192 transitions. Word has length 71 [2023-12-15 17:28:21,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:28:21,237 INFO L495 AbstractCegarLoop]: Abstraction has 113 states and 192 transitions. [2023-12-15 17:28:21,237 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:28:21,238 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 192 transitions. [2023-12-15 17:28:21,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-12-15 17:28:21,238 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:28:21,238 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:28:21,238 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-15 17:28:21,238 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:28:21,239 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:28:21,239 INFO L85 PathProgramCache]: Analyzing trace with hash 1366982758, now seen corresponding path program 1 times [2023-12-15 17:28:21,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:28:21,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649626187] [2023-12-15 17:28:21,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:28:21,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:28:21,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:28:21,460 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:28:21,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:28:21,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649626187] [2023-12-15 17:28:21,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1649626187] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 17:28:21,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1034220601] [2023-12-15 17:28:21,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:28:21,461 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 17:28:21,461 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 17:28:21,478 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 17:28:21,496 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-15 17:28:21,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:28:21,548 INFO L262 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-15 17:28:21,551 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 17:28:21,621 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:28:21,622 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 17:28:21,727 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:28:21,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1034220601] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 17:28:21,727 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-15 17:28:21,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-12-15 17:28:21,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934729805] [2023-12-15 17:28:21,728 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-15 17:28:21,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-15 17:28:21,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:28:21,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-15 17:28:21,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=98, Unknown=0, NotChecked=0, Total=156 [2023-12-15 17:28:21,730 INFO L87 Difference]: Start difference. First operand 113 states and 192 transitions. Second operand has 13 states, 13 states have (on average 8.846153846153847) internal successors, (115), 12 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:28:22,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:28:22,043 INFO L93 Difference]: Finished difference Result 290 states and 504 transitions. [2023-12-15 17:28:22,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-15 17:28:22,044 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 8.846153846153847) internal successors, (115), 12 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2023-12-15 17:28:22,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:28:22,046 INFO L225 Difference]: With dead ends: 290 [2023-12-15 17:28:22,046 INFO L226 Difference]: Without dead ends: 213 [2023-12-15 17:28:22,046 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=110, Invalid=162, Unknown=0, NotChecked=0, Total=272 [2023-12-15 17:28:22,046 INFO L413 NwaCegarLoop]: 161 mSDtfsCounter, 409 mSDsluCounter, 1040 mSDsCounter, 0 mSdLazyCounter, 252 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 409 SdHoareTripleChecker+Valid, 1201 SdHoareTripleChecker+Invalid, 267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-15 17:28:22,047 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [409 Valid, 1201 Invalid, 267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 252 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-15 17:28:22,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2023-12-15 17:28:22,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 203. [2023-12-15 17:28:22,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203 states, 202 states have (on average 1.7079207920792079) internal successors, (345), 202 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:28:22,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 345 transitions. [2023-12-15 17:28:22,053 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 345 transitions. Word has length 71 [2023-12-15 17:28:22,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:28:22,053 INFO L495 AbstractCegarLoop]: Abstraction has 203 states and 345 transitions. [2023-12-15 17:28:22,053 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.846153846153847) internal successors, (115), 12 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:28:22,053 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 345 transitions. [2023-12-15 17:28:22,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2023-12-15 17:28:22,054 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:28:22,054 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:28:22,069 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-12-15 17:28:22,258 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-12-15 17:28:22,259 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:28:22,259 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:28:22,259 INFO L85 PathProgramCache]: Analyzing trace with hash -1229807304, now seen corresponding path program 2 times [2023-12-15 17:28:22,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:28:22,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528458031] [2023-12-15 17:28:22,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:28:22,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:28:22,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:28:22,731 INFO L134 CoverageAnalysis]: Checked inductivity of 460 backedges. 0 proven. 460 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:28:22,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:28:22,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528458031] [2023-12-15 17:28:22,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [528458031] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 17:28:22,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [38834897] [2023-12-15 17:28:22,731 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-15 17:28:22,732 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 17:28:22,732 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 17:28:22,750 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 17:28:22,752 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-15 17:28:22,871 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-15 17:28:22,871 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-15 17:28:22,873 INFO L262 TraceCheckSpWp]: Trace formula consists of 384 conjuncts, 23 conjunts are in the unsatisfiable core [2023-12-15 17:28:22,876 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 17:28:22,986 INFO L134 CoverageAnalysis]: Checked inductivity of 460 backedges. 0 proven. 460 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:28:22,986 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 17:28:23,278 INFO L134 CoverageAnalysis]: Checked inductivity of 460 backedges. 0 proven. 460 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:28:23,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [38834897] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 17:28:23,278 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-15 17:28:23,278 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 24 [2023-12-15 17:28:23,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228605700] [2023-12-15 17:28:23,278 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-15 17:28:23,279 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-12-15 17:28:23,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:28:23,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-12-15 17:28:23,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=170, Invalid=430, Unknown=0, NotChecked=0, Total=600 [2023-12-15 17:28:23,280 INFO L87 Difference]: Start difference. First operand 203 states and 345 transitions. Second operand has 25 states, 25 states have (on average 9.4) internal successors, (235), 24 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:28:26,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:28:26,269 INFO L93 Difference]: Finished difference Result 499 states and 865 transitions. [2023-12-15 17:28:26,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-12-15 17:28:26,270 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 9.4) internal successors, (235), 24 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 131 [2023-12-15 17:28:26,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:28:26,271 INFO L225 Difference]: With dead ends: 499 [2023-12-15 17:28:26,271 INFO L226 Difference]: Without dead ends: 377 [2023-12-15 17:28:26,272 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 282 GetRequests, 249 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=400, Invalid=790, Unknown=0, NotChecked=0, Total=1190 [2023-12-15 17:28:26,272 INFO L413 NwaCegarLoop]: 257 mSDtfsCounter, 1848 mSDsluCounter, 2544 mSDsCounter, 0 mSdLazyCounter, 858 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1848 SdHoareTripleChecker+Valid, 2801 SdHoareTripleChecker+Invalid, 905 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 858 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-15 17:28:26,273 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1848 Valid, 2801 Invalid, 905 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 858 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-15 17:28:26,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2023-12-15 17:28:26,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 364. [2023-12-15 17:28:26,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 364 states, 363 states have (on average 1.7024793388429753) internal successors, (618), 363 states have internal predecessors, (618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:28:26,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 618 transitions. [2023-12-15 17:28:26,280 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 618 transitions. Word has length 131 [2023-12-15 17:28:26,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:28:26,280 INFO L495 AbstractCegarLoop]: Abstraction has 364 states and 618 transitions. [2023-12-15 17:28:26,280 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 9.4) internal successors, (235), 24 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:28:26,280 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 618 transitions. [2023-12-15 17:28:26,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2023-12-15 17:28:26,281 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:28:26,282 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 16, 16, 16, 16, 16, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:28:26,287 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-12-15 17:28:26,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 17:28:26,487 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:28:26,488 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:28:26,488 INFO L85 PathProgramCache]: Analyzing trace with hash 1618504458, now seen corresponding path program 3 times [2023-12-15 17:28:26,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:28:26,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578261869] [2023-12-15 17:28:26,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:28:26,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:28:26,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:28:27,348 INFO L134 CoverageAnalysis]: Checked inductivity of 1216 backedges. 76 proven. 0 refuted. 0 times theorem prover too weak. 1140 trivial. 0 not checked. [2023-12-15 17:28:27,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:28:27,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578261869] [2023-12-15 17:28:27,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [578261869] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:28:27,349 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:28:27,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-15 17:28:27,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795473659] [2023-12-15 17:28:27,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:28:27,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-15 17:28:27,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:28:27,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-15 17:28:27,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2023-12-15 17:28:27,350 INFO L87 Difference]: Start difference. First operand 364 states and 618 transitions. Second operand has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 11 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:28:27,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:28:27,673 INFO L93 Difference]: Finished difference Result 1402 states and 2375 transitions. [2023-12-15 17:28:27,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-15 17:28:27,673 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 11 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 191 [2023-12-15 17:28:27,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:28:27,677 INFO L225 Difference]: With dead ends: 1402 [2023-12-15 17:28:27,677 INFO L226 Difference]: Without dead ends: 1046 [2023-12-15 17:28:27,678 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=84, Invalid=296, Unknown=0, NotChecked=0, Total=380 [2023-12-15 17:28:27,680 INFO L413 NwaCegarLoop]: 94 mSDtfsCounter, 127 mSDsluCounter, 818 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 912 SdHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-15 17:28:27,680 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [127 Valid, 912 Invalid, 174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 164 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-15 17:28:27,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1046 states. [2023-12-15 17:28:27,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1046 to 872. [2023-12-15 17:28:27,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 872 states, 871 states have (on average 1.5935706084959815) internal successors, (1388), 871 states have internal predecessors, (1388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:28:27,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 872 states to 872 states and 1388 transitions. [2023-12-15 17:28:27,698 INFO L78 Accepts]: Start accepts. Automaton has 872 states and 1388 transitions. Word has length 191 [2023-12-15 17:28:27,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:28:27,699 INFO L495 AbstractCegarLoop]: Abstraction has 872 states and 1388 transitions. [2023-12-15 17:28:27,700 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 11 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:28:27,700 INFO L276 IsEmpty]: Start isEmpty. Operand 872 states and 1388 transitions. [2023-12-15 17:28:27,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2023-12-15 17:28:27,701 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:28:27,701 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 16, 16, 16, 16, 16, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:28:27,702 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-15 17:28:27,702 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:28:27,702 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:28:27,702 INFO L85 PathProgramCache]: Analyzing trace with hash -1364244136, now seen corresponding path program 1 times [2023-12-15 17:28:27,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:28:27,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532492215] [2023-12-15 17:28:27,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:28:27,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:28:27,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:28:27,990 INFO L134 CoverageAnalysis]: Checked inductivity of 1216 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1216 trivial. 0 not checked. [2023-12-15 17:28:27,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:28:27,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532492215] [2023-12-15 17:28:27,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [532492215] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:28:27,991 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:28:27,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 17:28:27,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855015543] [2023-12-15 17:28:27,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:28:27,991 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 17:28:27,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:28:27,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 17:28:27,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-15 17:28:27,992 INFO L87 Difference]: Start difference. First operand 872 states and 1388 transitions. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:28:28,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:28:28,028 INFO L93 Difference]: Finished difference Result 925 states and 1472 transitions. [2023-12-15 17:28:28,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 17:28:28,029 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 192 [2023-12-15 17:28:28,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:28:28,031 INFO L225 Difference]: With dead ends: 925 [2023-12-15 17:28:28,031 INFO L226 Difference]: Without dead ends: 917 [2023-12-15 17:28:28,031 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-15 17:28:28,033 INFO L413 NwaCegarLoop]: 105 mSDtfsCounter, 28 mSDsluCounter, 184 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 289 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 17:28:28,033 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 289 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 17:28:28,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 917 states. [2023-12-15 17:28:28,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 917 to 913. [2023-12-15 17:28:28,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 913 states, 912 states have (on average 1.599780701754386) internal successors, (1459), 912 states have internal predecessors, (1459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:28:28,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 913 states to 913 states and 1459 transitions. [2023-12-15 17:28:28,049 INFO L78 Accepts]: Start accepts. Automaton has 913 states and 1459 transitions. Word has length 192 [2023-12-15 17:28:28,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:28:28,050 INFO L495 AbstractCegarLoop]: Abstraction has 913 states and 1459 transitions. [2023-12-15 17:28:28,050 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:28:28,050 INFO L276 IsEmpty]: Start isEmpty. Operand 913 states and 1459 transitions. [2023-12-15 17:28:28,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2023-12-15 17:28:28,051 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:28:28,051 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 16, 16, 16, 16, 16, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:28:28,051 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-15 17:28:28,052 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:28:28,052 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:28:28,052 INFO L85 PathProgramCache]: Analyzing trace with hash 291480062, now seen corresponding path program 1 times [2023-12-15 17:28:28,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:28:28,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750476767] [2023-12-15 17:28:28,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:28:28,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:28:28,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:28:28,449 INFO L134 CoverageAnalysis]: Checked inductivity of 1216 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1216 trivial. 0 not checked. [2023-12-15 17:28:28,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:28:28,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1750476767] [2023-12-15 17:28:28,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1750476767] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:28:28,449 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:28:28,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-15 17:28:28,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341696530] [2023-12-15 17:28:28,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:28:28,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-15 17:28:28,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:28:28,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-15 17:28:28,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-15 17:28:28,450 INFO L87 Difference]: Start difference. First operand 913 states and 1459 transitions. Second operand has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:28:28,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:28:28,524 INFO L93 Difference]: Finished difference Result 957 states and 1523 transitions. [2023-12-15 17:28:28,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-15 17:28:28,524 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 192 [2023-12-15 17:28:28,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:28:28,526 INFO L225 Difference]: With dead ends: 957 [2023-12-15 17:28:28,527 INFO L226 Difference]: Without dead ends: 931 [2023-12-15 17:28:28,527 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-15 17:28:28,527 INFO L413 NwaCegarLoop]: 104 mSDtfsCounter, 4 mSDsluCounter, 280 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 384 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 17:28:28,527 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 384 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 17:28:28,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 931 states. [2023-12-15 17:28:28,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 931 to 922. [2023-12-15 17:28:28,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 922 states, 921 states have (on average 1.5917480998914224) internal successors, (1466), 921 states have internal predecessors, (1466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:28:28,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 922 states to 922 states and 1466 transitions. [2023-12-15 17:28:28,541 INFO L78 Accepts]: Start accepts. Automaton has 922 states and 1466 transitions. Word has length 192 [2023-12-15 17:28:28,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:28:28,542 INFO L495 AbstractCegarLoop]: Abstraction has 922 states and 1466 transitions. [2023-12-15 17:28:28,542 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:28:28,542 INFO L276 IsEmpty]: Start isEmpty. Operand 922 states and 1466 transitions. [2023-12-15 17:28:28,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2023-12-15 17:28:28,543 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:28:28,544 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 16, 16, 16, 16, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:28:28,544 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-15 17:28:28,544 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:28:28,544 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:28:28,544 INFO L85 PathProgramCache]: Analyzing trace with hash 399233867, now seen corresponding path program 1 times [2023-12-15 17:28:28,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:28:28,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009647584] [2023-12-15 17:28:28,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:28:28,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:28:28,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:28:28,802 INFO L134 CoverageAnalysis]: Checked inductivity of 1216 backedges. 121 proven. 0 refuted. 0 times theorem prover too weak. 1095 trivial. 0 not checked. [2023-12-15 17:28:28,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:28:28,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2009647584] [2023-12-15 17:28:28,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2009647584] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:28:28,802 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:28:28,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 17:28:28,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330584803] [2023-12-15 17:28:28,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:28:28,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 17:28:28,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:28:28,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 17:28:28,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-15 17:28:28,803 INFO L87 Difference]: Start difference. First operand 922 states and 1466 transitions. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:28:28,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:28:28,829 INFO L93 Difference]: Finished difference Result 2267 states and 3607 transitions. [2023-12-15 17:28:28,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 17:28:28,829 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 192 [2023-12-15 17:28:28,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:28:28,833 INFO L225 Difference]: With dead ends: 2267 [2023-12-15 17:28:28,833 INFO L226 Difference]: Without dead ends: 1374 [2023-12-15 17:28:28,834 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-15 17:28:28,834 INFO L413 NwaCegarLoop]: 105 mSDtfsCounter, 24 mSDsluCounter, 201 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 306 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 17:28:28,834 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 306 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 17:28:28,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1374 states. [2023-12-15 17:28:28,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1374 to 1210. [2023-12-15 17:28:28,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1210 states, 1209 states have (on average 1.554177005789909) internal successors, (1879), 1209 states have internal predecessors, (1879), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:28:28,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1210 states to 1210 states and 1879 transitions. [2023-12-15 17:28:28,852 INFO L78 Accepts]: Start accepts. Automaton has 1210 states and 1879 transitions. Word has length 192 [2023-12-15 17:28:28,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:28:28,852 INFO L495 AbstractCegarLoop]: Abstraction has 1210 states and 1879 transitions. [2023-12-15 17:28:28,852 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:28:28,852 INFO L276 IsEmpty]: Start isEmpty. Operand 1210 states and 1879 transitions. [2023-12-15 17:28:28,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2023-12-15 17:28:28,854 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:28:28,854 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 16, 16, 16, 16, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:28:28,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-15 17:28:28,854 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:28:28,855 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:28:28,855 INFO L85 PathProgramCache]: Analyzing trace with hash 956364934, now seen corresponding path program 1 times [2023-12-15 17:28:28,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:28:28,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684708901] [2023-12-15 17:28:28,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:28:28,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:28:28,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:28:29,015 INFO L134 CoverageAnalysis]: Checked inductivity of 1216 backedges. 287 proven. 14 refuted. 0 times theorem prover too weak. 915 trivial. 0 not checked. [2023-12-15 17:28:29,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:28:29,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684708901] [2023-12-15 17:28:29,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1684708901] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 17:28:29,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [532339626] [2023-12-15 17:28:29,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:28:29,015 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 17:28:29,015 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 17:28:29,016 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 17:28:29,047 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-15 17:28:29,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:28:29,125 INFO L262 TraceCheckSpWp]: Trace formula consists of 549 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-15 17:28:29,134 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 17:28:29,331 INFO L134 CoverageAnalysis]: Checked inductivity of 1216 backedges. 287 proven. 14 refuted. 0 times theorem prover too weak. 915 trivial. 0 not checked. [2023-12-15 17:28:29,331 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 17:28:29,535 INFO L134 CoverageAnalysis]: Checked inductivity of 1216 backedges. 287 proven. 14 refuted. 0 times theorem prover too weak. 915 trivial. 0 not checked. [2023-12-15 17:28:29,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [532339626] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 17:28:29,535 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-15 17:28:29,536 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2023-12-15 17:28:29,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091140075] [2023-12-15 17:28:29,537 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-15 17:28:29,537 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-15 17:28:29,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:28:29,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-15 17:28:29,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-15 17:28:29,538 INFO L87 Difference]: Start difference. First operand 1210 states and 1879 transitions. Second operand has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:28:29,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:28:29,583 INFO L93 Difference]: Finished difference Result 2576 states and 3985 transitions. [2023-12-15 17:28:29,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-15 17:28:29,583 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 192 [2023-12-15 17:28:29,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:28:29,587 INFO L225 Difference]: With dead ends: 2576 [2023-12-15 17:28:29,587 INFO L226 Difference]: Without dead ends: 1443 [2023-12-15 17:28:29,588 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 390 GetRequests, 382 SyntacticMatches, 3 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-15 17:28:29,588 INFO L413 NwaCegarLoop]: 119 mSDtfsCounter, 144 mSDsluCounter, 216 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 335 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 17:28:29,588 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 335 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 17:28:29,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1443 states. [2023-12-15 17:28:29,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1443 to 1334. [2023-12-15 17:28:29,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1334 states, 1333 states have (on average 1.4673668417104275) internal successors, (1956), 1333 states have internal predecessors, (1956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:28:29,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1334 states to 1334 states and 1956 transitions. [2023-12-15 17:28:29,610 INFO L78 Accepts]: Start accepts. Automaton has 1334 states and 1956 transitions. Word has length 192 [2023-12-15 17:28:29,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:28:29,610 INFO L495 AbstractCegarLoop]: Abstraction has 1334 states and 1956 transitions. [2023-12-15 17:28:29,610 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:28:29,610 INFO L276 IsEmpty]: Start isEmpty. Operand 1334 states and 1956 transitions. [2023-12-15 17:28:29,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2023-12-15 17:28:29,612 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:28:29,613 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 16, 16, 16, 16, 16, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:28:29,624 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-15 17:28:29,817 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 17:28:29,817 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:28:29,817 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:28:29,818 INFO L85 PathProgramCache]: Analyzing trace with hash -1137204956, now seen corresponding path program 1 times [2023-12-15 17:28:29,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:28:29,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693027801] [2023-12-15 17:28:29,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:28:29,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:28:29,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:28:30,238 INFO L134 CoverageAnalysis]: Checked inductivity of 1216 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1216 trivial. 0 not checked. [2023-12-15 17:28:30,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:28:30,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693027801] [2023-12-15 17:28:30,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [693027801] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:28:30,238 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:28:30,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-15 17:28:30,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543099201] [2023-12-15 17:28:30,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:28:30,239 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-15 17:28:30,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:28:30,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-15 17:28:30,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-15 17:28:30,240 INFO L87 Difference]: Start difference. First operand 1334 states and 1956 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:28:30,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:28:30,506 INFO L93 Difference]: Finished difference Result 1451 states and 2145 transitions. [2023-12-15 17:28:30,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-15 17:28:30,507 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 193 [2023-12-15 17:28:30,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:28:30,510 INFO L225 Difference]: With dead ends: 1451 [2023-12-15 17:28:30,510 INFO L226 Difference]: Without dead ends: 1346 [2023-12-15 17:28:30,510 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-15 17:28:30,511 INFO L413 NwaCegarLoop]: 104 mSDtfsCounter, 4 mSDsluCounter, 280 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 384 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-15 17:28:30,512 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 384 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-15 17:28:30,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1346 states. [2023-12-15 17:28:30,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1346 to 1340. [2023-12-15 17:28:30,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1340 states, 1339 states have (on average 1.4652725914861837) internal successors, (1962), 1339 states have internal predecessors, (1962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:28:30,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1340 states to 1340 states and 1962 transitions. [2023-12-15 17:28:30,535 INFO L78 Accepts]: Start accepts. Automaton has 1340 states and 1962 transitions. Word has length 193 [2023-12-15 17:28:30,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:28:30,535 INFO L495 AbstractCegarLoop]: Abstraction has 1340 states and 1962 transitions. [2023-12-15 17:28:30,535 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:28:30,536 INFO L276 IsEmpty]: Start isEmpty. Operand 1340 states and 1962 transitions. [2023-12-15 17:28:30,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2023-12-15 17:28:30,538 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:28:30,538 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 16, 16, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:28:30,538 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-15 17:28:30,538 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:28:30,538 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:28:30,538 INFO L85 PathProgramCache]: Analyzing trace with hash 1164988652, now seen corresponding path program 1 times [2023-12-15 17:28:30,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:28:30,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626016438] [2023-12-15 17:28:30,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:28:30,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:28:30,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:28:30,679 INFO L134 CoverageAnalysis]: Checked inductivity of 1216 backedges. 290 proven. 14 refuted. 0 times theorem prover too weak. 912 trivial. 0 not checked. [2023-12-15 17:28:30,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:28:30,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626016438] [2023-12-15 17:28:30,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [626016438] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 17:28:30,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [401477922] [2023-12-15 17:28:30,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:28:30,680 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 17:28:30,680 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 17:28:30,681 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 17:28:30,721 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-15 17:28:30,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:28:30,807 INFO L262 TraceCheckSpWp]: Trace formula consists of 552 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-15 17:28:30,809 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 17:28:30,984 INFO L134 CoverageAnalysis]: Checked inductivity of 1216 backedges. 290 proven. 14 refuted. 0 times theorem prover too weak. 912 trivial. 0 not checked. [2023-12-15 17:28:30,984 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 17:28:31,192 INFO L134 CoverageAnalysis]: Checked inductivity of 1216 backedges. 290 proven. 14 refuted. 0 times theorem prover too weak. 912 trivial. 0 not checked. [2023-12-15 17:28:31,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [401477922] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 17:28:31,193 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-15 17:28:31,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2023-12-15 17:28:31,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638339784] [2023-12-15 17:28:31,193 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-15 17:28:31,193 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-15 17:28:31,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:28:31,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-15 17:28:31,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-15 17:28:31,194 INFO L87 Difference]: Start difference. First operand 1340 states and 1962 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:28:31,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:28:31,252 INFO L93 Difference]: Finished difference Result 3111 states and 4580 transitions. [2023-12-15 17:28:31,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-15 17:28:31,252 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 193 [2023-12-15 17:28:31,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:28:31,256 INFO L225 Difference]: With dead ends: 3111 [2023-12-15 17:28:31,256 INFO L226 Difference]: Without dead ends: 1829 [2023-12-15 17:28:31,259 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 392 GetRequests, 384 SyntacticMatches, 3 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-15 17:28:31,259 INFO L413 NwaCegarLoop]: 117 mSDtfsCounter, 164 mSDsluCounter, 297 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 164 SdHoareTripleChecker+Valid, 414 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 17:28:31,259 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [164 Valid, 414 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 17:28:31,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1829 states. [2023-12-15 17:28:31,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1829 to 1684. [2023-12-15 17:28:31,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1684 states, 1683 states have (on average 1.4254307783719549) internal successors, (2399), 1683 states have internal predecessors, (2399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:28:31,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1684 states to 1684 states and 2399 transitions. [2023-12-15 17:28:31,300 INFO L78 Accepts]: Start accepts. Automaton has 1684 states and 2399 transitions. Word has length 193 [2023-12-15 17:28:31,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:28:31,300 INFO L495 AbstractCegarLoop]: Abstraction has 1684 states and 2399 transitions. [2023-12-15 17:28:31,300 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:28:31,300 INFO L276 IsEmpty]: Start isEmpty. Operand 1684 states and 2399 transitions. [2023-12-15 17:28:31,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2023-12-15 17:28:31,302 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:28:31,303 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 16, 16, 16, 16, 16, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:28:31,314 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-15 17:28:31,508 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-12-15 17:28:31,508 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:28:31,508 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:28:31,508 INFO L85 PathProgramCache]: Analyzing trace with hash -1033270472, now seen corresponding path program 1 times [2023-12-15 17:28:31,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:28:31,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015843869] [2023-12-15 17:28:31,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:28:31,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:28:31,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:28:31,833 INFO L134 CoverageAnalysis]: Checked inductivity of 1216 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1216 trivial. 0 not checked. [2023-12-15 17:28:31,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:28:31,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2015843869] [2023-12-15 17:28:31,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2015843869] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:28:31,834 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:28:31,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-15 17:28:31,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503473508] [2023-12-15 17:28:31,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:28:31,834 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-15 17:28:31,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:28:31,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-15 17:28:31,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-15 17:28:31,835 INFO L87 Difference]: Start difference. First operand 1684 states and 2399 transitions. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:28:31,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:28:31,988 INFO L93 Difference]: Finished difference Result 1757 states and 2506 transitions. [2023-12-15 17:28:31,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-15 17:28:31,989 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 194 [2023-12-15 17:28:31,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:28:31,993 INFO L225 Difference]: With dead ends: 1757 [2023-12-15 17:28:31,993 INFO L226 Difference]: Without dead ends: 1702 [2023-12-15 17:28:31,995 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-15 17:28:31,995 INFO L413 NwaCegarLoop]: 105 mSDtfsCounter, 4 mSDsluCounter, 281 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 386 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 17:28:31,996 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 386 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 17:28:31,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1702 states. [2023-12-15 17:28:32,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1702 to 1693. [2023-12-15 17:28:32,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1693 states, 1692 states have (on average 1.4219858156028369) internal successors, (2406), 1692 states have internal predecessors, (2406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:28:32,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1693 states to 1693 states and 2406 transitions. [2023-12-15 17:28:32,042 INFO L78 Accepts]: Start accepts. Automaton has 1693 states and 2406 transitions. Word has length 194 [2023-12-15 17:28:32,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:28:32,042 INFO L495 AbstractCegarLoop]: Abstraction has 1693 states and 2406 transitions. [2023-12-15 17:28:32,042 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:28:32,042 INFO L276 IsEmpty]: Start isEmpty. Operand 1693 states and 2406 transitions. [2023-12-15 17:28:32,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2023-12-15 17:28:32,046 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:28:32,047 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 16, 16, 16, 16, 16, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:28:32,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-15 17:28:32,047 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:28:32,047 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:28:32,047 INFO L85 PathProgramCache]: Analyzing trace with hash 1956953642, now seen corresponding path program 1 times [2023-12-15 17:28:32,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:28:32,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706444921] [2023-12-15 17:28:32,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:28:32,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:28:32,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:28:32,404 INFO L134 CoverageAnalysis]: Checked inductivity of 1216 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1216 trivial. 0 not checked. [2023-12-15 17:28:32,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:28:32,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [706444921] [2023-12-15 17:28:32,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [706444921] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:28:32,404 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:28:32,405 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-15 17:28:32,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69658470] [2023-12-15 17:28:32,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:28:32,405 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-15 17:28:32,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:28:32,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-15 17:28:32,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-15 17:28:32,406 INFO L87 Difference]: Start difference. First operand 1693 states and 2406 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:28:32,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:28:32,484 INFO L93 Difference]: Finished difference Result 1835 states and 2626 transitions. [2023-12-15 17:28:32,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-15 17:28:32,485 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 195 [2023-12-15 17:28:32,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:28:32,488 INFO L225 Difference]: With dead ends: 1835 [2023-12-15 17:28:32,489 INFO L226 Difference]: Without dead ends: 1705 [2023-12-15 17:28:32,489 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-15 17:28:32,489 INFO L413 NwaCegarLoop]: 104 mSDtfsCounter, 4 mSDsluCounter, 280 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 384 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 17:28:32,489 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 384 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 17:28:32,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1705 states. [2023-12-15 17:28:32,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1705 to 1699. [2023-12-15 17:28:32,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1699 states, 1698 states have (on average 1.4204946996466432) internal successors, (2412), 1698 states have internal predecessors, (2412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:28:32,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1699 states to 1699 states and 2412 transitions. [2023-12-15 17:28:32,527 INFO L78 Accepts]: Start accepts. Automaton has 1699 states and 2412 transitions. Word has length 195 [2023-12-15 17:28:32,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:28:32,527 INFO L495 AbstractCegarLoop]: Abstraction has 1699 states and 2412 transitions. [2023-12-15 17:28:32,527 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:28:32,527 INFO L276 IsEmpty]: Start isEmpty. Operand 1699 states and 2412 transitions. [2023-12-15 17:28:32,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2023-12-15 17:28:32,529 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:28:32,530 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 16, 16, 16, 16, 16, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:28:32,530 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-15 17:28:32,530 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:28:32,530 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:28:32,530 INFO L85 PathProgramCache]: Analyzing trace with hash 2127142558, now seen corresponding path program 1 times [2023-12-15 17:28:32,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:28:32,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732522770] [2023-12-15 17:28:32,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:28:32,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:28:32,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:28:32,806 INFO L134 CoverageAnalysis]: Checked inductivity of 1216 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1216 trivial. 0 not checked. [2023-12-15 17:28:32,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:28:32,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732522770] [2023-12-15 17:28:32,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [732522770] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:28:32,807 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:28:32,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-15 17:28:32,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303447082] [2023-12-15 17:28:32,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:28:32,808 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-15 17:28:32,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:28:32,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-15 17:28:32,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-15 17:28:32,808 INFO L87 Difference]: Start difference. First operand 1699 states and 2412 transitions. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:28:33,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:28:33,153 INFO L93 Difference]: Finished difference Result 1801 states and 2562 transitions. [2023-12-15 17:28:33,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-15 17:28:33,155 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 196 [2023-12-15 17:28:33,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:28:33,159 INFO L225 Difference]: With dead ends: 1801 [2023-12-15 17:28:33,159 INFO L226 Difference]: Without dead ends: 1717 [2023-12-15 17:28:33,159 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-15 17:28:33,159 INFO L413 NwaCegarLoop]: 105 mSDtfsCounter, 4 mSDsluCounter, 281 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 386 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-15 17:28:33,160 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 386 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-15 17:28:33,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1717 states. [2023-12-15 17:28:33,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1717 to 1708. [2023-12-15 17:28:33,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1708 states, 1707 states have (on average 1.4171060339777388) internal successors, (2419), 1707 states have internal predecessors, (2419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:28:33,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1708 states to 1708 states and 2419 transitions. [2023-12-15 17:28:33,199 INFO L78 Accepts]: Start accepts. Automaton has 1708 states and 2419 transitions. Word has length 196 [2023-12-15 17:28:33,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:28:33,199 INFO L495 AbstractCegarLoop]: Abstraction has 1708 states and 2419 transitions. [2023-12-15 17:28:33,199 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:28:33,199 INFO L276 IsEmpty]: Start isEmpty. Operand 1708 states and 2419 transitions. [2023-12-15 17:28:33,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2023-12-15 17:28:33,202 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:28:33,202 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 16, 16, 16, 16, 16, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:28:33,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-15 17:28:33,202 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:28:33,202 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:28:33,203 INFO L85 PathProgramCache]: Analyzing trace with hash 318792070, now seen corresponding path program 1 times [2023-12-15 17:28:33,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:28:33,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [680968123] [2023-12-15 17:28:33,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:28:33,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:28:33,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:28:33,508 INFO L134 CoverageAnalysis]: Checked inductivity of 1216 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1216 trivial. 0 not checked. [2023-12-15 17:28:33,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:28:33,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [680968123] [2023-12-15 17:28:33,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [680968123] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:28:33,508 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:28:33,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-15 17:28:33,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886830475] [2023-12-15 17:28:33,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:28:33,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-15 17:28:33,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:28:33,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-15 17:28:33,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-15 17:28:33,509 INFO L87 Difference]: Start difference. First operand 1708 states and 2419 transitions. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:28:35,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:28:35,035 INFO L93 Difference]: Finished difference Result 1875 states and 2670 transitions. [2023-12-15 17:28:35,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-15 17:28:35,035 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 197 [2023-12-15 17:28:35,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:28:35,039 INFO L225 Difference]: With dead ends: 1875 [2023-12-15 17:28:35,039 INFO L226 Difference]: Without dead ends: 1720 [2023-12-15 17:28:35,040 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-15 17:28:35,040 INFO L413 NwaCegarLoop]: 104 mSDtfsCounter, 4 mSDsluCounter, 280 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 384 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-15 17:28:35,040 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 384 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-15 17:28:35,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1720 states. [2023-12-15 17:28:35,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1720 to 1714. [2023-12-15 17:28:35,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1714 states, 1713 states have (on average 1.4156450671336835) internal successors, (2425), 1713 states have internal predecessors, (2425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:28:35,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1714 states to 1714 states and 2425 transitions. [2023-12-15 17:28:35,112 INFO L78 Accepts]: Start accepts. Automaton has 1714 states and 2425 transitions. Word has length 197 [2023-12-15 17:28:35,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:28:35,112 INFO L495 AbstractCegarLoop]: Abstraction has 1714 states and 2425 transitions. [2023-12-15 17:28:35,112 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:28:35,112 INFO L276 IsEmpty]: Start isEmpty. Operand 1714 states and 2425 transitions. [2023-12-15 17:28:35,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2023-12-15 17:28:35,115 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:28:35,115 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 16, 16, 16, 16, 16, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:28:35,115 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-15 17:28:35,115 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:28:35,116 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:28:35,116 INFO L85 PathProgramCache]: Analyzing trace with hash 145108886, now seen corresponding path program 1 times [2023-12-15 17:28:35,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:28:35,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400090996] [2023-12-15 17:28:35,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:28:35,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:28:35,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:28:35,502 INFO L134 CoverageAnalysis]: Checked inductivity of 1216 backedges. 217 proven. 14 refuted. 0 times theorem prover too weak. 985 trivial. 0 not checked. [2023-12-15 17:28:35,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:28:35,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400090996] [2023-12-15 17:28:35,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1400090996] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 17:28:35,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1050943135] [2023-12-15 17:28:35,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:28:35,504 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 17:28:35,504 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 17:28:35,505 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 17:28:35,545 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-15 17:28:35,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:28:35,627 INFO L262 TraceCheckSpWp]: Trace formula consists of 559 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-15 17:28:35,629 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 17:28:35,671 INFO L134 CoverageAnalysis]: Checked inductivity of 1216 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1216 trivial. 0 not checked. [2023-12-15 17:28:35,671 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 17:28:35,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1050943135] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:28:35,671 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 17:28:35,671 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 9 [2023-12-15 17:28:35,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747314935] [2023-12-15 17:28:35,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:28:35,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-15 17:28:35,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:28:35,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-15 17:28:35,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-12-15 17:28:35,673 INFO L87 Difference]: Start difference. First operand 1714 states and 2425 transitions. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:28:35,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:28:35,886 INFO L93 Difference]: Finished difference Result 1765 states and 2496 transitions. [2023-12-15 17:28:35,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-15 17:28:35,886 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 198 [2023-12-15 17:28:35,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:28:35,891 INFO L225 Difference]: With dead ends: 1765 [2023-12-15 17:28:35,891 INFO L226 Difference]: Without dead ends: 1732 [2023-12-15 17:28:35,891 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 197 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2023-12-15 17:28:35,892 INFO L413 NwaCegarLoop]: 96 mSDtfsCounter, 58 mSDsluCounter, 225 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 321 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-15 17:28:35,892 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 321 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-15 17:28:35,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1732 states. [2023-12-15 17:28:35,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1732 to 1722. [2023-12-15 17:28:35,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1722 states, 1721 states have (on average 1.4154561301568855) internal successors, (2436), 1721 states have internal predecessors, (2436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:28:35,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1722 states to 1722 states and 2436 transitions. [2023-12-15 17:28:35,936 INFO L78 Accepts]: Start accepts. Automaton has 1722 states and 2436 transitions. Word has length 198 [2023-12-15 17:28:35,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:28:35,937 INFO L495 AbstractCegarLoop]: Abstraction has 1722 states and 2436 transitions. [2023-12-15 17:28:35,937 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:28:35,937 INFO L276 IsEmpty]: Start isEmpty. Operand 1722 states and 2436 transitions. [2023-12-15 17:28:35,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2023-12-15 17:28:35,940 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:28:35,940 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 16, 16, 16, 16, 16, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:28:35,949 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-15 17:28:36,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 17:28:36,145 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:28:36,146 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:28:36,146 INFO L85 PathProgramCache]: Analyzing trace with hash 846173464, now seen corresponding path program 1 times [2023-12-15 17:28:36,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:28:36,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232024578] [2023-12-15 17:28:36,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:28:36,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:28:36,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:28:36,529 INFO L134 CoverageAnalysis]: Checked inductivity of 1216 backedges. 217 proven. 14 refuted. 0 times theorem prover too weak. 985 trivial. 0 not checked. [2023-12-15 17:28:36,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:28:36,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232024578] [2023-12-15 17:28:36,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [232024578] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 17:28:36,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [186690346] [2023-12-15 17:28:36,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:28:36,530 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 17:28:36,530 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 17:28:36,531 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 17:28:36,562 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-15 17:28:36,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:28:36,642 INFO L262 TraceCheckSpWp]: Trace formula consists of 558 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-15 17:28:36,644 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 17:28:36,680 INFO L134 CoverageAnalysis]: Checked inductivity of 1216 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1216 trivial. 0 not checked. [2023-12-15 17:28:36,680 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 17:28:36,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [186690346] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:28:36,680 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 17:28:36,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 9 [2023-12-15 17:28:36,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524727020] [2023-12-15 17:28:36,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:28:36,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-15 17:28:36,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:28:36,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-15 17:28:36,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-12-15 17:28:36,681 INFO L87 Difference]: Start difference. First operand 1722 states and 2436 transitions. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:28:36,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:28:36,811 INFO L93 Difference]: Finished difference Result 1745 states and 2465 transitions. [2023-12-15 17:28:36,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-15 17:28:36,811 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 198 [2023-12-15 17:28:36,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:28:36,815 INFO L225 Difference]: With dead ends: 1745 [2023-12-15 17:28:36,815 INFO L226 Difference]: Without dead ends: 1736 [2023-12-15 17:28:36,816 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 197 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2023-12-15 17:28:36,816 INFO L413 NwaCegarLoop]: 96 mSDtfsCounter, 58 mSDsluCounter, 225 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 321 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 17:28:36,816 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 321 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 17:28:36,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1736 states. [2023-12-15 17:28:36,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1736 to 1728. [2023-12-15 17:28:36,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1728 states, 1727 states have (on average 1.4157498552403012) internal successors, (2445), 1727 states have internal predecessors, (2445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:28:36,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1728 states to 1728 states and 2445 transitions. [2023-12-15 17:28:36,865 INFO L78 Accepts]: Start accepts. Automaton has 1728 states and 2445 transitions. Word has length 198 [2023-12-15 17:28:36,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:28:36,865 INFO L495 AbstractCegarLoop]: Abstraction has 1728 states and 2445 transitions. [2023-12-15 17:28:36,865 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:28:36,865 INFO L276 IsEmpty]: Start isEmpty. Operand 1728 states and 2445 transitions. [2023-12-15 17:28:36,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2023-12-15 17:28:36,868 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:28:36,868 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 16, 16, 16, 16, 16, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:28:36,878 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-12-15 17:28:37,078 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 17:28:37,079 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:28:37,079 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:28:37,079 INFO L85 PathProgramCache]: Analyzing trace with hash 903431766, now seen corresponding path program 1 times [2023-12-15 17:28:37,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:28:37,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135895424] [2023-12-15 17:28:37,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:28:37,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:28:37,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:28:37,444 INFO L134 CoverageAnalysis]: Checked inductivity of 1216 backedges. 217 proven. 14 refuted. 0 times theorem prover too weak. 985 trivial. 0 not checked. [2023-12-15 17:28:37,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:28:37,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [135895424] [2023-12-15 17:28:37,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [135895424] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 17:28:37,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1467451725] [2023-12-15 17:28:37,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:28:37,446 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 17:28:37,446 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 17:28:37,459 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 17:28:37,490 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-15 17:28:37,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:28:37,575 INFO L262 TraceCheckSpWp]: Trace formula consists of 557 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-15 17:28:37,578 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 17:28:37,889 INFO L134 CoverageAnalysis]: Checked inductivity of 1216 backedges. 188 proven. 45 refuted. 0 times theorem prover too weak. 983 trivial. 0 not checked. [2023-12-15 17:28:37,890 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 17:28:38,137 INFO L134 CoverageAnalysis]: Checked inductivity of 1216 backedges. 217 proven. 14 refuted. 0 times theorem prover too weak. 985 trivial. 0 not checked. [2023-12-15 17:28:38,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1467451725] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 17:28:38,137 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-15 17:28:38,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8, 8] total 13 [2023-12-15 17:28:38,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807312998] [2023-12-15 17:28:38,137 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-15 17:28:38,138 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-15 17:28:38,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:28:38,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-15 17:28:38,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2023-12-15 17:28:38,138 INFO L87 Difference]: Start difference. First operand 1728 states and 2445 transitions. Second operand has 13 states, 13 states have (on average 6.6923076923076925) internal successors, (87), 13 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:28:42,366 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-15 17:28:45,570 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.33s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-15 17:28:47,867 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.92s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-15 17:28:48,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:28:48,878 INFO L93 Difference]: Finished difference Result 1961 states and 2761 transitions. [2023-12-15 17:28:48,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-12-15 17:28:48,878 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 6.6923076923076925) internal successors, (87), 13 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 198 [2023-12-15 17:28:48,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:28:48,882 INFO L225 Difference]: With dead ends: 1961 [2023-12-15 17:28:48,883 INFO L226 Difference]: Without dead ends: 1826 [2023-12-15 17:28:48,883 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 418 GetRequests, 388 SyntacticMatches, 6 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=127, Invalid=523, Unknown=0, NotChecked=0, Total=650 [2023-12-15 17:28:48,884 INFO L413 NwaCegarLoop]: 111 mSDtfsCounter, 226 mSDsluCounter, 800 mSDsCounter, 0 mSdLazyCounter, 217 mSolverCounterSat, 35 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 226 SdHoareTripleChecker+Valid, 911 SdHoareTripleChecker+Invalid, 253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 217 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.6s IncrementalHoareTripleChecker+Time [2023-12-15 17:28:48,884 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [226 Valid, 911 Invalid, 253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 217 Invalid, 1 Unknown, 0 Unchecked, 10.6s Time] [2023-12-15 17:28:48,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1826 states. [2023-12-15 17:28:48,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1826 to 1713. [2023-12-15 17:28:48,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1713 states, 1712 states have (on average 1.4100467289719627) internal successors, (2414), 1712 states have internal predecessors, (2414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:28:48,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1713 states to 1713 states and 2414 transitions. [2023-12-15 17:28:48,921 INFO L78 Accepts]: Start accepts. Automaton has 1713 states and 2414 transitions. Word has length 198 [2023-12-15 17:28:48,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:28:48,921 INFO L495 AbstractCegarLoop]: Abstraction has 1713 states and 2414 transitions. [2023-12-15 17:28:48,921 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.6923076923076925) internal successors, (87), 13 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:28:48,921 INFO L276 IsEmpty]: Start isEmpty. Operand 1713 states and 2414 transitions. [2023-12-15 17:28:48,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2023-12-15 17:28:48,924 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:28:48,924 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 16, 16, 16, 16, 16, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:28:48,932 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-15 17:28:49,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2023-12-15 17:28:49,130 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:28:49,131 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:28:49,131 INFO L85 PathProgramCache]: Analyzing trace with hash 1980779276, now seen corresponding path program 1 times [2023-12-15 17:28:49,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:28:49,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942201679] [2023-12-15 17:28:49,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:28:49,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:28:49,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:28:49,437 INFO L134 CoverageAnalysis]: Checked inductivity of 1216 backedges. 178 proven. 14 refuted. 0 times theorem prover too weak. 1024 trivial. 0 not checked. [2023-12-15 17:28:49,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:28:49,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [942201679] [2023-12-15 17:28:49,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [942201679] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 17:28:49,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1017059046] [2023-12-15 17:28:49,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:28:49,437 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 17:28:49,438 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 17:28:49,462 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 17:28:49,499 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-15 17:28:49,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:28:49,590 INFO L262 TraceCheckSpWp]: Trace formula consists of 561 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-15 17:28:49,592 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 17:28:49,628 INFO L134 CoverageAnalysis]: Checked inductivity of 1216 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1216 trivial. 0 not checked. [2023-12-15 17:28:49,628 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 17:28:49,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1017059046] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:28:49,628 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 17:28:49,628 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 9 [2023-12-15 17:28:49,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142402402] [2023-12-15 17:28:49,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:28:49,629 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-15 17:28:49,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:28:49,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-15 17:28:49,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-12-15 17:28:49,629 INFO L87 Difference]: Start difference. First operand 1713 states and 2414 transitions. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:28:52,450 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.80s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-15 17:28:52,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:28:52,632 INFO L93 Difference]: Finished difference Result 1784 states and 2509 transitions. [2023-12-15 17:28:52,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-15 17:28:52,632 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 199 [2023-12-15 17:28:52,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:28:52,637 INFO L225 Difference]: With dead ends: 1784 [2023-12-15 17:28:52,637 INFO L226 Difference]: Without dead ends: 1726 [2023-12-15 17:28:52,637 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 198 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2023-12-15 17:28:52,638 INFO L413 NwaCegarLoop]: 96 mSDtfsCounter, 22 mSDsluCounter, 261 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 357 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2023-12-15 17:28:52,638 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 357 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2023-12-15 17:28:52,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1726 states. [2023-12-15 17:28:52,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1726 to 1719. [2023-12-15 17:28:52,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1719 states, 1718 states have (on average 1.409778812572759) internal successors, (2422), 1718 states have internal predecessors, (2422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:28:52,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1719 states to 1719 states and 2422 transitions. [2023-12-15 17:28:52,677 INFO L78 Accepts]: Start accepts. Automaton has 1719 states and 2422 transitions. Word has length 199 [2023-12-15 17:28:52,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:28:52,677 INFO L495 AbstractCegarLoop]: Abstraction has 1719 states and 2422 transitions. [2023-12-15 17:28:52,677 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:28:52,678 INFO L276 IsEmpty]: Start isEmpty. Operand 1719 states and 2422 transitions. [2023-12-15 17:28:52,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2023-12-15 17:28:52,680 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:28:52,680 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 16, 16, 16, 16, 16, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:28:52,702 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-12-15 17:28:52,886 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 17:28:52,887 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:28:52,887 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:28:52,887 INFO L85 PathProgramCache]: Analyzing trace with hash 291835534, now seen corresponding path program 1 times [2023-12-15 17:28:52,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:28:52,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425787013] [2023-12-15 17:28:52,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:28:52,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:28:52,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:28:53,177 INFO L134 CoverageAnalysis]: Checked inductivity of 1216 backedges. 178 proven. 14 refuted. 0 times theorem prover too weak. 1024 trivial. 0 not checked. [2023-12-15 17:28:53,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:28:53,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1425787013] [2023-12-15 17:28:53,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1425787013] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 17:28:53,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [806771754] [2023-12-15 17:28:53,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:28:53,178 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 17:28:53,178 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 17:28:53,179 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 17:28:53,211 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-15 17:28:53,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:28:53,291 INFO L262 TraceCheckSpWp]: Trace formula consists of 560 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-15 17:28:53,293 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 17:28:53,321 INFO L134 CoverageAnalysis]: Checked inductivity of 1216 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1216 trivial. 0 not checked. [2023-12-15 17:28:53,322 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 17:28:53,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [806771754] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:28:53,322 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 17:28:53,322 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 9 [2023-12-15 17:28:53,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76434363] [2023-12-15 17:28:53,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:28:53,322 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-15 17:28:53,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:28:53,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-15 17:28:53,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-12-15 17:28:53,323 INFO L87 Difference]: Start difference. First operand 1719 states and 2422 transitions. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:28:53,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:28:53,515 INFO L93 Difference]: Finished difference Result 1851 states and 2608 transitions. [2023-12-15 17:28:53,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-15 17:28:53,516 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 199 [2023-12-15 17:28:53,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:28:53,520 INFO L225 Difference]: With dead ends: 1851 [2023-12-15 17:28:53,520 INFO L226 Difference]: Without dead ends: 1732 [2023-12-15 17:28:53,520 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 198 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2023-12-15 17:28:53,521 INFO L413 NwaCegarLoop]: 96 mSDtfsCounter, 22 mSDsluCounter, 261 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 357 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-15 17:28:53,521 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 357 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-15 17:28:53,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1732 states. [2023-12-15 17:28:53,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1732 to 1725. [2023-12-15 17:28:53,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1725 states, 1724 states have (on average 1.4095127610208817) internal successors, (2430), 1724 states have internal predecessors, (2430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:28:53,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1725 states to 1725 states and 2430 transitions. [2023-12-15 17:28:53,583 INFO L78 Accepts]: Start accepts. Automaton has 1725 states and 2430 transitions. Word has length 199 [2023-12-15 17:28:53,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:28:53,583 INFO L495 AbstractCegarLoop]: Abstraction has 1725 states and 2430 transitions. [2023-12-15 17:28:53,584 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:28:53,584 INFO L276 IsEmpty]: Start isEmpty. Operand 1725 states and 2430 transitions. [2023-12-15 17:28:53,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2023-12-15 17:28:53,587 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:28:53,587 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 16, 16, 16, 16, 16, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:28:53,592 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-12-15 17:28:53,792 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2023-12-15 17:28:53,792 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:28:53,792 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:28:53,792 INFO L85 PathProgramCache]: Analyzing trace with hash 157822028, now seen corresponding path program 1 times [2023-12-15 17:28:53,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:28:53,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493303074] [2023-12-15 17:28:53,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:28:53,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:28:53,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:28:54,113 INFO L134 CoverageAnalysis]: Checked inductivity of 1216 backedges. 178 proven. 14 refuted. 0 times theorem prover too weak. 1024 trivial. 0 not checked. [2023-12-15 17:28:54,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:28:54,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1493303074] [2023-12-15 17:28:54,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1493303074] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 17:28:54,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2126814214] [2023-12-15 17:28:54,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:28:54,114 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 17:28:54,114 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 17:28:54,115 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 17:28:54,148 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-15 17:28:54,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:28:54,233 INFO L262 TraceCheckSpWp]: Trace formula consists of 559 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-15 17:28:54,235 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 17:28:54,479 INFO L134 CoverageAnalysis]: Checked inductivity of 1216 backedges. 149 proven. 45 refuted. 0 times theorem prover too weak. 1022 trivial. 0 not checked. [2023-12-15 17:28:54,479 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 17:28:54,770 INFO L134 CoverageAnalysis]: Checked inductivity of 1216 backedges. 178 proven. 14 refuted. 0 times theorem prover too weak. 1024 trivial. 0 not checked. [2023-12-15 17:28:54,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2126814214] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 17:28:54,770 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-15 17:28:54,770 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8, 8] total 13 [2023-12-15 17:28:54,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778306952] [2023-12-15 17:28:54,771 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-15 17:28:54,771 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-15 17:28:54,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:28:54,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-15 17:28:54,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2023-12-15 17:28:54,772 INFO L87 Difference]: Start difference. First operand 1725 states and 2430 transitions. Second operand has 13 states, 13 states have (on average 5.769230769230769) internal successors, (75), 13 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:28:57,952 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.92s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-15 17:28:58,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:28:58,515 INFO L93 Difference]: Finished difference Result 2021 states and 2839 transitions. [2023-12-15 17:28:58,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-15 17:28:58,515 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.769230769230769) internal successors, (75), 13 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 199 [2023-12-15 17:28:58,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:28:58,520 INFO L225 Difference]: With dead ends: 2021 [2023-12-15 17:28:58,520 INFO L226 Difference]: Without dead ends: 1632 [2023-12-15 17:28:58,521 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 419 GetRequests, 391 SyntacticMatches, 5 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=119, Invalid=481, Unknown=0, NotChecked=0, Total=600 [2023-12-15 17:28:58,521 INFO L413 NwaCegarLoop]: 106 mSDtfsCounter, 272 mSDsluCounter, 663 mSDsCounter, 0 mSdLazyCounter, 202 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 272 SdHoareTripleChecker+Valid, 769 SdHoareTripleChecker+Invalid, 230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2023-12-15 17:28:58,522 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [272 Valid, 769 Invalid, 230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 202 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2023-12-15 17:28:58,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1632 states. [2023-12-15 17:28:58,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1632 to 1526. [2023-12-15 17:28:58,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1526 states, 1525 states have (on average 1.4275409836065573) internal successors, (2177), 1525 states have internal predecessors, (2177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:28:58,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1526 states to 1526 states and 2177 transitions. [2023-12-15 17:28:58,547 INFO L78 Accepts]: Start accepts. Automaton has 1526 states and 2177 transitions. Word has length 199 [2023-12-15 17:28:58,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:28:58,547 INFO L495 AbstractCegarLoop]: Abstraction has 1526 states and 2177 transitions. [2023-12-15 17:28:58,547 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.769230769230769) internal successors, (75), 13 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:28:58,547 INFO L276 IsEmpty]: Start isEmpty. Operand 1526 states and 2177 transitions. [2023-12-15 17:28:58,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2023-12-15 17:28:58,550 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:28:58,550 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 16, 16, 16, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:28:58,574 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-12-15 17:28:58,755 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2023-12-15 17:28:58,755 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:28:58,755 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:28:58,756 INFO L85 PathProgramCache]: Analyzing trace with hash -1429820028, now seen corresponding path program 1 times [2023-12-15 17:28:58,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:28:58,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981612502] [2023-12-15 17:28:58,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:28:58,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:28:58,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:28:58,840 INFO L134 CoverageAnalysis]: Checked inductivity of 1321 backedges. 236 proven. 0 refuted. 0 times theorem prover too weak. 1085 trivial. 0 not checked. [2023-12-15 17:28:58,840 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:28:58,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981612502] [2023-12-15 17:28:58,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [981612502] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:28:58,840 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:28:58,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 17:28:58,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573648482] [2023-12-15 17:28:58,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:28:58,841 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 17:28:58,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:28:58,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 17:28:58,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-15 17:28:58,841 INFO L87 Difference]: Start difference. First operand 1526 states and 2177 transitions. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:28:58,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:28:58,884 INFO L93 Difference]: Finished difference Result 2496 states and 3438 transitions. [2023-12-15 17:28:58,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 17:28:58,887 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 207 [2023-12-15 17:28:58,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:28:58,897 INFO L225 Difference]: With dead ends: 2496 [2023-12-15 17:28:58,897 INFO L226 Difference]: Without dead ends: 1570 [2023-12-15 17:28:58,898 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-15 17:28:58,898 INFO L413 NwaCegarLoop]: 150 mSDtfsCounter, 112 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 325 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 17:28:58,898 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 325 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 17:28:58,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1570 states. [2023-12-15 17:28:58,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1570 to 1526. [2023-12-15 17:28:58,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1526 states, 1525 states have (on average 1.4013114754098361) internal successors, (2137), 1525 states have internal predecessors, (2137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:28:58,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1526 states to 1526 states and 2137 transitions. [2023-12-15 17:28:58,924 INFO L78 Accepts]: Start accepts. Automaton has 1526 states and 2137 transitions. Word has length 207 [2023-12-15 17:28:58,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:28:58,924 INFO L495 AbstractCegarLoop]: Abstraction has 1526 states and 2137 transitions. [2023-12-15 17:28:58,925 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:28:58,925 INFO L276 IsEmpty]: Start isEmpty. Operand 1526 states and 2137 transitions. [2023-12-15 17:28:58,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2023-12-15 17:28:58,927 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:28:58,927 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 16, 16, 16, 16, 16, 16, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:28:58,927 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-12-15 17:28:58,928 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:28:58,928 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:28:58,928 INFO L85 PathProgramCache]: Analyzing trace with hash 1174738906, now seen corresponding path program 1 times [2023-12-15 17:28:58,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:28:58,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774173942] [2023-12-15 17:28:58,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:28:58,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:28:58,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:28:59,122 INFO L134 CoverageAnalysis]: Checked inductivity of 1336 backedges. 263 proven. 2 refuted. 0 times theorem prover too weak. 1071 trivial. 0 not checked. [2023-12-15 17:28:59,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:28:59,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774173942] [2023-12-15 17:28:59,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1774173942] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 17:28:59,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1055528720] [2023-12-15 17:28:59,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:28:59,123 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 17:28:59,123 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 17:28:59,124 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 17:28:59,154 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-15 17:28:59,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:28:59,241 INFO L262 TraceCheckSpWp]: Trace formula consists of 594 conjuncts, 20 conjunts are in the unsatisfiable core [2023-12-15 17:28:59,244 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 17:28:59,321 INFO L134 CoverageAnalysis]: Checked inductivity of 1336 backedges. 271 proven. 8 refuted. 0 times theorem prover too weak. 1057 trivial. 0 not checked. [2023-12-15 17:28:59,321 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 17:28:59,460 INFO L134 CoverageAnalysis]: Checked inductivity of 1336 backedges. 340 proven. 8 refuted. 0 times theorem prover too weak. 988 trivial. 0 not checked. [2023-12-15 17:28:59,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1055528720] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 17:28:59,460 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-15 17:28:59,460 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 8] total 16 [2023-12-15 17:28:59,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478957436] [2023-12-15 17:28:59,460 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-15 17:28:59,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-15 17:28:59,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:28:59,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-15 17:28:59,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2023-12-15 17:28:59,462 INFO L87 Difference]: Start difference. First operand 1526 states and 2137 transitions. Second operand has 16 states, 16 states have (on average 6.25) internal successors, (100), 16 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:29:00,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:29:00,043 INFO L93 Difference]: Finished difference Result 3987 states and 5863 transitions. [2023-12-15 17:29:00,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-12-15 17:29:00,044 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 6.25) internal successors, (100), 16 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 207 [2023-12-15 17:29:00,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:29:00,048 INFO L225 Difference]: With dead ends: 3987 [2023-12-15 17:29:00,048 INFO L226 Difference]: Without dead ends: 2720 [2023-12-15 17:29:00,050 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 445 GetRequests, 408 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 332 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=318, Invalid=1164, Unknown=0, NotChecked=0, Total=1482 [2023-12-15 17:29:00,050 INFO L413 NwaCegarLoop]: 166 mSDtfsCounter, 823 mSDsluCounter, 1492 mSDsCounter, 0 mSdLazyCounter, 348 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 823 SdHoareTripleChecker+Valid, 1658 SdHoareTripleChecker+Invalid, 376 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 348 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-15 17:29:00,050 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [823 Valid, 1658 Invalid, 376 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 348 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-15 17:29:00,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2720 states. [2023-12-15 17:29:00,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2720 to 2105. [2023-12-15 17:29:00,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2105 states, 2104 states have (on average 1.4139733840304183) internal successors, (2975), 2104 states have internal predecessors, (2975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:29:00,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2105 states to 2105 states and 2975 transitions. [2023-12-15 17:29:00,093 INFO L78 Accepts]: Start accepts. Automaton has 2105 states and 2975 transitions. Word has length 207 [2023-12-15 17:29:00,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:29:00,093 INFO L495 AbstractCegarLoop]: Abstraction has 2105 states and 2975 transitions. [2023-12-15 17:29:00,093 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 6.25) internal successors, (100), 16 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:29:00,093 INFO L276 IsEmpty]: Start isEmpty. Operand 2105 states and 2975 transitions. [2023-12-15 17:29:00,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2023-12-15 17:29:00,096 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:29:00,096 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 16, 16, 16, 16, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:29:00,102 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-12-15 17:29:00,302 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-12-15 17:29:00,303 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:29:00,303 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:29:00,303 INFO L85 PathProgramCache]: Analyzing trace with hash 616295070, now seen corresponding path program 1 times [2023-12-15 17:29:00,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:29:00,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487558305] [2023-12-15 17:29:00,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:29:00,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:29:00,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:29:00,860 INFO L134 CoverageAnalysis]: Checked inductivity of 1336 backedges. 76 proven. 30 refuted. 0 times theorem prover too weak. 1230 trivial. 0 not checked. [2023-12-15 17:29:00,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:29:00,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487558305] [2023-12-15 17:29:00,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1487558305] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 17:29:00,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [313639154] [2023-12-15 17:29:00,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:29:00,861 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 17:29:00,861 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 17:29:00,862 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 17:29:00,884 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-12-15 17:29:00,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:29:00,982 INFO L262 TraceCheckSpWp]: Trace formula consists of 579 conjuncts, 21 conjunts are in the unsatisfiable core [2023-12-15 17:29:00,984 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 17:29:01,106 INFO L134 CoverageAnalysis]: Checked inductivity of 1336 backedges. 297 proven. 10 refuted. 0 times theorem prover too weak. 1029 trivial. 0 not checked. [2023-12-15 17:29:01,106 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 17:29:01,278 INFO L134 CoverageAnalysis]: Checked inductivity of 1336 backedges. 343 proven. 5 refuted. 0 times theorem prover too weak. 988 trivial. 0 not checked. [2023-12-15 17:29:01,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [313639154] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 17:29:01,278 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-15 17:29:01,278 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8, 10] total 21 [2023-12-15 17:29:01,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004846478] [2023-12-15 17:29:01,278 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-15 17:29:01,279 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-12-15 17:29:01,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:29:01,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-12-15 17:29:01,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=358, Unknown=0, NotChecked=0, Total=420 [2023-12-15 17:29:01,279 INFO L87 Difference]: Start difference. First operand 2105 states and 2975 transitions. Second operand has 21 states, 21 states have (on average 5.619047619047619) internal successors, (118), 21 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:29:05,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:29:05,697 INFO L93 Difference]: Finished difference Result 7591 states and 10843 transitions. [2023-12-15 17:29:05,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 125 states. [2023-12-15 17:29:05,698 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 5.619047619047619) internal successors, (118), 21 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 207 [2023-12-15 17:29:05,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:29:05,707 INFO L225 Difference]: With dead ends: 7591 [2023-12-15 17:29:05,707 INFO L226 Difference]: Without dead ends: 5505 [2023-12-15 17:29:05,713 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 542 GetRequests, 410 SyntacticMatches, 0 SemanticMatches, 132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6509 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=1912, Invalid=15910, Unknown=0, NotChecked=0, Total=17822 [2023-12-15 17:29:05,714 INFO L413 NwaCegarLoop]: 169 mSDtfsCounter, 677 mSDsluCounter, 1761 mSDsCounter, 0 mSdLazyCounter, 1329 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 677 SdHoareTripleChecker+Valid, 1930 SdHoareTripleChecker+Invalid, 1386 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 1329 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-15 17:29:05,714 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [677 Valid, 1930 Invalid, 1386 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 1329 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-15 17:29:05,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5505 states. [2023-12-15 17:29:05,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5505 to 3535. [2023-12-15 17:29:05,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3535 states, 3534 states have (on average 1.4408602150537635) internal successors, (5092), 3534 states have internal predecessors, (5092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:29:05,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3535 states to 3535 states and 5092 transitions. [2023-12-15 17:29:05,800 INFO L78 Accepts]: Start accepts. Automaton has 3535 states and 5092 transitions. Word has length 207 [2023-12-15 17:29:05,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:29:05,800 INFO L495 AbstractCegarLoop]: Abstraction has 3535 states and 5092 transitions. [2023-12-15 17:29:05,800 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 5.619047619047619) internal successors, (118), 21 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:29:05,800 INFO L276 IsEmpty]: Start isEmpty. Operand 3535 states and 5092 transitions. [2023-12-15 17:29:05,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2023-12-15 17:29:05,806 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:29:05,806 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 16, 16, 16, 16, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:29:05,826 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-12-15 17:29:06,012 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-12-15 17:29:06,012 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:29:06,013 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:29:06,013 INFO L85 PathProgramCache]: Analyzing trace with hash 391349526, now seen corresponding path program 2 times [2023-12-15 17:29:06,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:29:06,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [680300913] [2023-12-15 17:29:06,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:29:06,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:29:06,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:29:06,531 INFO L134 CoverageAnalysis]: Checked inductivity of 1336 backedges. 232 proven. 28 refuted. 0 times theorem prover too weak. 1076 trivial. 0 not checked. [2023-12-15 17:29:06,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:29:06,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [680300913] [2023-12-15 17:29:06,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [680300913] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 17:29:06,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [626061104] [2023-12-15 17:29:06,532 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-15 17:29:06,532 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 17:29:06,532 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 17:29:06,547 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 17:29:06,590 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-12-15 17:29:06,741 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-15 17:29:06,742 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-15 17:29:06,745 INFO L262 TraceCheckSpWp]: Trace formula consists of 593 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-15 17:29:06,747 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 17:29:07,062 INFO L134 CoverageAnalysis]: Checked inductivity of 1336 backedges. 232 proven. 28 refuted. 0 times theorem prover too weak. 1076 trivial. 0 not checked. [2023-12-15 17:29:07,063 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 17:29:07,263 INFO L134 CoverageAnalysis]: Checked inductivity of 1336 backedges. 232 proven. 28 refuted. 0 times theorem prover too weak. 1076 trivial. 0 not checked. [2023-12-15 17:29:07,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [626061104] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 17:29:07,263 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-15 17:29:07,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 6] total 11 [2023-12-15 17:29:07,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716073580] [2023-12-15 17:29:07,263 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-15 17:29:07,264 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-15 17:29:07,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:29:07,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-15 17:29:07,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-12-15 17:29:07,264 INFO L87 Difference]: Start difference. First operand 3535 states and 5092 transitions. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:29:11,457 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-15 17:29:16,459 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] Received shutdown request... [2023-12-15 17:29:16,765 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-15 17:29:16,783 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-15 17:29:17,777 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-12-15 17:29:17,984 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forcibly destroying the process [2023-12-15 17:29:17,988 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 428 GetRequests, 411 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=210, Unknown=0, NotChecked=0, Total=272 [2023-12-15 17:29:17,989 INFO L413 NwaCegarLoop]: 106 mSDtfsCounter, 110 mSDsluCounter, 650 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 5 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 756 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.1s IncrementalHoareTripleChecker+Time [2023-12-15 17:29:17,989 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 756 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 112 Invalid, 2 Unknown, 0 Unchecked, 9.1s Time] [2023-12-15 17:29:17,990 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-15 17:29:17,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-12-15 17:29:17,990 WARN L619 AbstractCegarLoop]: Verification canceled: while executing Executor. [2023-12-15 17:29:17,993 INFO L445 BasicCegarLoop]: Path program histogram: [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:29:17,994 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-15 17:29:17,995 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.12 05:29:17 BoogieIcfgContainer [2023-12-15 17:29:17,995 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-15 17:29:17,995 INFO L158 Benchmark]: Toolchain (without parser) took 62046.91ms. Allocated memory was 276.8MB in the beginning and 592.4MB in the end (delta: 315.6MB). Free memory was 233.8MB in the beginning and 461.2MB in the end (delta: -227.3MB). Peak memory consumption was 89.4MB. Max. memory is 8.0GB. [2023-12-15 17:29:17,996 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 211.8MB. Free memory is still 158.9MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-15 17:29:17,996 INFO L158 Benchmark]: CACSL2BoogieTranslator took 150.64ms. Allocated memory is still 276.8MB. Free memory was 233.8MB in the beginning and 222.3MB in the end (delta: 11.5MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2023-12-15 17:29:17,996 INFO L158 Benchmark]: Boogie Procedure Inliner took 71.06ms. Allocated memory is still 276.8MB. Free memory was 222.3MB in the beginning and 219.7MB in the end (delta: 2.6MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2023-12-15 17:29:17,996 INFO L158 Benchmark]: Boogie Preprocessor took 61.89ms. Allocated memory is still 276.8MB. Free memory was 219.7MB in the beginning and 217.1MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-15 17:29:17,996 INFO L158 Benchmark]: RCFGBuilder took 3292.44ms. Allocated memory is still 276.8MB. Free memory was 217.1MB in the beginning and 193.5MB in the end (delta: 23.6MB). Peak memory consumption was 24.1MB. Max. memory is 8.0GB. [2023-12-15 17:29:17,996 INFO L158 Benchmark]: TraceAbstraction took 58466.42ms. Allocated memory was 276.8MB in the beginning and 592.4MB in the end (delta: 315.6MB). Free memory was 192.4MB in the beginning and 461.2MB in the end (delta: -268.7MB). Peak memory consumption was 47.4MB. Max. memory is 8.0GB. [2023-12-15 17:29:17,997 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks [2023-12-15 17:29:17,998 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 137 Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 211.8MB. Free memory is still 158.9MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 150.64ms. Allocated memory is still 276.8MB. Free memory was 233.8MB in the beginning and 222.3MB in the end (delta: 11.5MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 71.06ms. Allocated memory is still 276.8MB. Free memory was 222.3MB in the beginning and 219.7MB in the end (delta: 2.6MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 61.89ms. Allocated memory is still 276.8MB. Free memory was 219.7MB in the beginning and 217.1MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 3292.44ms. Allocated memory is still 276.8MB. Free memory was 217.1MB in the beginning and 193.5MB in the end (delta: 23.6MB). Peak memory consumption was 24.1MB. Max. memory is 8.0GB. * TraceAbstraction took 58466.42ms. Allocated memory was 276.8MB in the beginning and 592.4MB in the end (delta: 315.6MB). Free memory was 192.4MB in the beginning and 461.2MB in the end (delta: -268.7MB). Peak memory consumption was 47.4MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 25]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 25). Cancelled while executing Executor. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 64 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 58.4s, OverallIterations: 28, TraceHistogramMax: 16, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.1s, AutomataDifference: 40.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 3 mSolverCounterUnknown, 5427 SdHoareTripleChecker+Valid, 31.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 5427 mSDsluCounter, 17336 SdHoareTripleChecker+Invalid, 30.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 14012 mSDsCounter, 293 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4220 IncrementalHoareTripleChecker+Invalid, 4517 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 293 mSolverCounterUnsat, 3324 mSDtfsCounter, 4220 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 4462 GetRequests, 4060 SyntacticMatches, 19 SemanticMatches, 383 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7231 ImplicationChecksByTransitivity, 7.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3535occurred in iteration=27, InterpolantAutomatonStates: 351, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.8s AutomataMinimizationTime, 27 MinimizatonAttempts, 3598 StatesRemovedByMinimization, 25 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.4s SsaConstructionTime, 2.7s SatisfiabilityAnalysisTime, 10.3s InterpolantComputationTime, 7033 NumberOfCodeBlocks, 7033 NumberOfCodeBlocksAsserted, 44 NumberOfCheckSat, 8627 ConstructedInterpolants, 0 QuantifiedInterpolants, 34299 SizeOfPredicates, 46 NumberOfNonLiveVariables, 6968 ConjunctsInSsa, 160 ConjunctsInUnsatCore, 52 InterpolantComputations, 18 PerfectInterpolantSequences, 48304/50312 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown